Home / 765,077.13-1,055,806.44-420,905.67

Finding the Fourth Proportional to 765,077.13, 1,055,806.44 and 420,905.67

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Solution

The fourth proportional to 765,077.13, 1,055,806.44 and 420,905.67 is: 580,849.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,077.13 : 1,055,806.44 = 420,905.67 : x
  2. Step 2: Convert to fraction form
    765,077.13/1,055,806.44 = 420,905.67/x
  3. Step 3: Cross multiply
    765,077.13x = 1,055,806.44 × 420,905.67
  4. Step 4: Simplify right side
    765,077.13x = 444,394,917,018.52
  5. Step 5: Solve for x
    x = 444,394,917,018.52/765,077.13
  6. Step 6: Final answer
    x = 580,849.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.